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0 <br />J -M Manufacturing <br />Runoff/Detention Pond Design Calculations <br />24-22109-F02 <br />July 10, 1992 <br />Q 1 = Runoff From the Northern Half of the Site <br />Q 2 = Runoff From the Southern Half of the Site <br />Q 125681 (cfs) Q 195030 (cfs) <br />1 2 <br />A three hours detention time was assumed for the purpose of this design. <br />V .= Q • 3 V .= Q • 3 <br />1 1 2 2 <br />V = 377043 (cf) V = 585090 (cf) <br />1 2 <br />Estimated Dimentions: <br />"Standard Handbook for Civil Engineers, Section 21-64, Third Edition, was used <br />for consideration of design criterias for detention pond design. See <br />Attachment 1, page 3/3.A1 <br />1 Detention Ponds #1: Detention Ponds #2: <br />11 <br />C <br />k <br />---------------------------------------------------------------------------- <br />Estimated Dimentions for Pond #1: Estimated Dimentions for Pond #2: <br />2 Ponds @: <br />Lenght = 190 ft <br />Width = 40 ft <br />Depth = 25 ft <br />Total Design Volume = 380,000 (cf) <br />3 Ponds @: <br />Lenght = 200 ft <br />Width = 40 ft <br />Depth = 25 ft <br />Total Design Volume = 600,000 (cf) <br />---------------------------------------------------------------------------- <br />"Multiple units were chosen to compensate the maximum flow through width <br />limitation of 40 feet.11 <br />